Safety-envelop.



1. SAKAC.

SAFETY ENvELoP;

APPLlCATION FILED MARJZ. |917- 1,246,166; Patented.Nov.13,1917.

IJOHN sAxAo, yor onnvnnann' omo.` Q

sarnTY-Envnton l .To all @710m f. Be it known that I, JOHN .SAKAoVa Sub d `ject-of theK-ing of Hungary, residing at Clevelanch'in the county of Cuyahoga ,and State 4of. Ohio,have invented certain new and useful Improvements in Safety-Envelope, of

which the following.-isiaspeciication. f

This invention relates' to certain newfand useful improvements in safety envelope.

The primary ob] ect of the invention is the provision of an envelop structure adapted for' securely inclosing a missive, the securing means being so arranged that any attempt to open the envelop may be readily detected. y'

A further object of the device is the provision of an envelop adapted to prevent surreptitious extraction of the contents thereof when the envelop is sealed inl its closed position, interengaging sealing members being arranged for providing a secure closure' and l locking means for the device.

Y With these general objects in view and others that will appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of `parts hereinafter fully described, illustrated in the accompanying drawing and pointed out in the appended claims. j Y

In the drawing forming a part of this application and in which like numerals refer to corresponding parts throughout the sevfabric or other desirable material, the same l having a rectangular body portionV 11 andV employed in forming thel envelop.

`upon line opposite similar end flaps 12 while side iiaps 13 and 14, hereinafter designated as upper and lower flaps respectively are provided for coperation therewith.

The so-called lower flap 14 is of substan-Y tially triangular shapebeing connected aty Y Y* Specification of Letters Patent.

i Application alea March 12, 1917. seriaina1si1se. Y

ented Nov. 1?', 191'?. i

its base. to thebody 11 as the'lineS-lrupon 5 which the vflap 14 is adapted'to be folded. An apron 16 projects outwardly fro1n- .the apex of the flap 14 beingfoldable upon the gular, or keystoneshaped opening 18 in the Y line f17 for overlying a substantially trian- Hap 14 and'tozwhich flap the apron is secured by Asuitableadhes'ive matter 19 arranged adjacent the outer edges of the apron, it being understood that the apron 16-is secured Yin the manner noted overlying the innerV face of the lower Hap 14 and with said Hap folded upon the line 15 adjacent the body l1. The end flaps 12 are folded inwardly over# lying the flap 14 and secured thereby by the adhesive 20 upon the inner lower edges of the said end flaps. In this positionthe,envelop is in its completed` form as illustrated in Fig. 2,; the samebeing in a positionto receive articles therein, the closure flap 13 Y being open.

The end aps are provided with terminalv extensions 21 which overlie the opening 18 and areadhesively secured to the inner face of the apron 16 positioned inwardly thereof,

the end edges 22 of the extensions 21 being4 in substantially abutting engagement when so arranged andthereby providing La seg- Y 85.

mental entrance slot 23 for an larcuate tongue 24 provided at the extremity of theY sealing flap 13, it b'engfnotedthat Vthe apron 16 forms a receiving pocket for-the said tongue. With the envelop formed as described and c Y as best illustrated in Fig.V 2 of the drawing,f

a desired article` is placed within the en. velop and the ap 13 folded downwardly upon the line at 25 for engaging the adhesive 26 at the freeedges of the Yflap 13 Vwiththe outer sides of the end iiaps 12Uwhilev the tongue 22 which is also provided withV the adhesive, is Vthrust through the slot'23 and adhesively secured to the apron 16. An envelop isarranged which is cheap and easy to manufacture and which aifordssecurity `in lncloslng misslves and articles, the structure beingextremely difficult tol open orunseal without such act being readily detected.

What I claim as new is 1. An envelop comprising a blank having a substantially triangular flap providedwith a keystone shaped opening adjacent the apex thereof, a pocket forming apron at tached to the apex with the flap adapted for Y overlying the said opening inwardly of the flap when in Van envelopy forming arrangement, opposite end flaps arranged overlying the said triangular flap with extensions in end abutment With eacli other overlying a portion of said opening and-secured to the apron forming an entrance slot and a closure member adapted for reception in the said slot.

Q. An envelop Comprising a blank having a substantially triangular lap provided with a keystone shaped opening adjacent the apex thereof, a pocket forming apron attached to the apex With the iap adapted for overlying the said opening inwardly of the iiap when in an envelop forming arrangement, opposite end flaps arranged overlying the said triangular flap with extensions in end abutment Witli each other overlying a portion of said opening and secured to the apron forming a segmental entrance slotJ7 a closure flap arranged opposite the said triangular flap formed With a terminal arcuate tongue adapted lfor reception Within the slot when tlie device "is` closed and adhesive material upon the said closure flap and tongue adapted for engagement with the said end flap extensions and apron when closed.

In testimony whereof I atliX my signature.

JGHN SAKAC.

@epics-of this'patent may be obtained forve cents each, by addressing the -fCommissioner of Patents, l Washington, 1)..0, 

